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What is Laennec Injection? A Comprehensive Overview

4 min read

Developed in Japan based on research dating back to the 1950s, Laennec injection is a human placental hydrolysate, officially approved in its country of origin for treating chronic liver diseases. Today, it is widely recognized for both its therapeutic applications and its extensive off-label use in aesthetic medicine.

Quick Summary

Laennec is an injectable pharmaceutical product derived from human placental extract, containing growth factors, peptides, and other bioactive substances. While officially indicated for chronic liver disease in some regions, it is also used for anti-aging, skin rejuvenation, and overall wellness.

Key Points

  • Origin: Laennec is a pharmaceutical-grade hydrolysate of human placenta, produced under strict safety measures in Japan.

  • Composition: It contains a complex mixture of growth factors, cytokines, amino acids, vitamins, and minerals that promote cellular activity.

  • Primary Indication: The officially approved use in Japan and Korea is to improve hepatic function in patients with chronic liver disease.

  • Off-Label Uses: It is widely used in aesthetics and wellness for anti-aging, skin rejuvenation, combating fatigue, and treating certain dermatological conditions.

  • Administration: The injection is administered subcutaneously or intramuscularly by a medical professional, with dosage and frequency varying by treatment protocol.

  • Safety: Although safety measures are rigorous, a theoretical risk of infectious agent transmission exists, and adverse reactions like injection site pain and hypersensitivity can occur.

In This Article

The Composition and Origin of Laennec

What is Laennec injection? It is a medicinal product consisting of a water-soluble extract, or hydrolysate, of the human placenta. It is manufactured by Japan Bio Products (JBP) under stringent safety protocols. The process involves extracting a variety of growth factors, cytokines, and other physiologically active substances from full-term human placentas.

To ensure product safety, JBP employs the following measures:

  • Donor Screening: Each placenta donor undergoes a comprehensive medical interview and serological testing to screen for viral and bacterial infections.
  • NAT Testing: Nucleic acid amplification tests (NAT) are performed for several viruses, including HBV, HCV, and HIV.
  • Sterilization: The product is subjected to high-pressure steam sterilization at 121 °C for 20 minutes to inactivate potential pathogens.

Key components found in placental hydrolysate include:

  • Hepatocyte Growth Factor (HGF): Promotes the proliferation of liver cells to aid recovery from damage.
  • Epidermal Growth Factor (EGF): Enhances the regeneration of epidermal layers, crucial for skin rejuvenation.
  • Fibroblast Growth Factor (FGF): Helps rebuild damaged fibroblasts in the dermal layer, leading to the production of collagen, elastin, and hyaluronic acid.
  • Amino Acids, Peptides, and Minerals: Essential building blocks that support cellular function and repair.
  • Antioxidants: Counteract oxidative stress, which contributes to aging and tissue damage.

Approved and Off-Label Uses

While Laennec is an ethical drug with a specific, medically approved indication in certain countries, it is widely used off-label for a variety of aesthetic and wellness purposes. It is important to distinguish between these applications.

Approved Medical Indication

In Japan and Korea, Laennec is officially approved for the improvement of hepatic function in patients with chronic liver disease. Clinical studies have shown its effectiveness in significantly improving serum transaminase levels (GOT and GPT) in patients with chronic hepatitis and liver cirrhosis. Its mechanism in this context involves promoting liver cell regeneration and inhibiting liver injury caused by factors like toxins or viruses.

Off-Label Aesthetic and Wellness Applications

Despite its primary medical indication, Laennec has gained significant traction in the aesthetics market for its potential regenerative effects. These uses are not officially approved by regulatory bodies like the FDA in many Western countries and should be approached with caution after professional consultation.

Common off-label uses include:

  • Anti-aging and Skin Rejuvenation: Stimulates collagen and elastin production to improve skin elasticity, reduce wrinkles, and diminish fine lines.
  • Pigmentation Control: Helps to eliminate hyperpigmentation and dark spots by inhibiting the tyrosinase enzyme.
  • Hair Restoration: Improves blood circulation and regulates hormonal balance, potentially addressing hair loss.
  • Treatment of Skin Conditions: Used for correcting acne scars and treating chronic non-infectious skin diseases like atopic dermatitis.
  • Revitalization and Fatigue Management: Some patients use Laennec to combat chronic fatigue, improve overall vitality, and increase stress resistance.

The Laennec Treatment Procedure and Administration

Laennec is administered via injection, with the specific route depending on the condition being treated and the practitioner's protocol. The typical administration routes are:

  • Subcutaneous Injection: Injected just beneath the skin.
  • Intramuscular Injection: Injected into a muscle, such as the buttocks or arm.
  • Intravenous Injection (less common): In specific clinical settings, it can be administered intravenously, diluted in saline solution.

Protocols can vary, but a common approach involves an initial intensive phase followed by a maintenance phase. It is crucial that the procedure is performed by a qualified medical professional to ensure sterility and proper technique. The injection site should be alternated with each treatment to prevent indurations (lumps) from forming.

Benefits vs. Risks: A Closer Look

Any medical procedure carries potential benefits and risks. For Laennec injections, these can vary significantly depending on the intended use and individual response.

Aspect Potential Benefits Potential Risks & Side Effects
Liver Health Improved liver function in chronic hepatitis.
Promotes liver cell regeneration.
* Reduction of inflammation and fibrosis.
Possible adverse reactions, including pain at the injection site.
Uncertain long-term effects for certain off-label applications.
Skin Aesthetics Improved skin elasticity and tone.
Reduction of wrinkles and fine lines.
* Reduction of hyperpigmentation.
Injection site pain, swelling, or redness.
Allergic reactions, such as rash or itching.
* Hypersensitivity, though rare.
Overall Wellness Alleviation of chronic fatigue and stress.
Boosted immune system function.
* Normalization of hormonal panels.
Headaches or drowsiness.
The causal link between Laennec and certain wellness benefits is still under investigation.
Serious Risks N/A Theoretical Risk of Infection: The risk of transmitting infectious agents, though minimal due to safety measures, cannot be completely eliminated, and patients are made aware of this.
Allergic Shock: Though rare, a severe allergic reaction (anaphylactic shock) is a potential risk associated with protein-based products.
* Contraindications: Caution is needed for patients with allergies, and use is not established for children, pregnant, or breastfeeding women.

Conclusion: Navigating Laennec Injection

Laennec injection is a unique product derived from human placental hydrolysate with a history rooted in Japanese medicine for treating chronic liver disease. Its mechanism of action, which involves promoting cellular regeneration and modulating the immune system, has led to its extensive use in the aesthetic and wellness fields. While its officially approved medical application is well-documented, many of its other uses remain off-label and are not supported by the same level of regulatory scrutiny in all regions. Patients considering a Laennec injection for any purpose, especially aesthetic or wellness treatments, must be fully informed about its origin, its approved and off-label uses, and the associated risks. The importance of receiving this treatment from a qualified and reputable medical professional cannot be overstated to ensure both safety and the management of realistic expectations.

For comprehensive information on JBP's manufacturing and safety standards, refer to their official product page.

Frequently Asked Questions

The primary medical use of Laennec injection, specifically approved in countries like Japan and Korea, is for the improvement of hepatic function in patients with chronic liver disease.

No, Laennec injection is not approved by the FDA in the United States. Its manufacturer, JBP, notes that it is an ethical drug not sold online.

Common off-label aesthetic uses include anti-aging, reducing wrinkles and pigmentation, improving skin elasticity, and treating skin conditions like acne scars and atopic dermatitis.

Reported side effects include injection site pain, redness, itching, and indurations. Less common side effects can be hypersensitivity reactions, headache, or hormonal changes like gynecomastia.

To ensure safety, the human placenta donors are screened, and the raw materials are tested and subjected to high-pressure steam sterilization. This process aims to inactivate potential viruses and prevent disease transmission.

Some sources indicate that Laennec is slightly more painful upon injection compared to similar products like Melsmon due to its higher acidity. Pain at the injection site is a frequently reported adverse reaction.

Laennec should be administered with care to individuals with allergies. Its safety has not been established for children, pregnant, or lactating women. Patients with certain autoimmune conditions or active infections should also be cautious.

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Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.